In spite of the many security development, IPv4 still have flaws

Not fine, solved, okay but the correct term, maybe, on IP version 4 security is, mitigated. Isn't it safer to say that way?

While working on our presentation slides to be delivered next week to one of the computing organization's cyber security event in the country, I connected my computer to the Internet to look for claims, that IP cannot provide 100% guaranteed security, at least for now, it may also be forever, particularly on matters that concerns politics -maybe the toughest concern ever, maybe national infrastructure too, high-profile individual and organizations and more.

They developed the Internet Protocol version 4 without considering security in the design [and the myth that the Internet protocols were designed for warfare environments, CPNI, 2008].

According to the report, in page 5, "As a result, any system built in the future according to the TCP/IP specifications might reincarnate security flaws that have already hit our communication systems in the past. Producing a secure TCP/IP implementation nowadays is a very difficult task partly because of no single document that can serve as a security roadmap for the protocols."

The document, Security Assessment of the Internet Protocol version 4, can be downloaded from CPNI Website which is also seconded by an Internet-Draft from the IETF Website, still fresh and submitted just a week ago.
Excellent technical facilities and resources for our time.

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